cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A212107 Number of (w,x,y,z) with all terms in {1,...,n} and w >= harmonic mean of {x,y,z}.

Table of values

n a(n)
0 0
1 1
2 9
3 48
4 160
5 384
6 798
7 1468
8 2517
9 4041
10 6172
11 9063
12 12870
13 17746
14 23907
15 31581
16 40933
17 52227
18 65721
19 81676
20 100401
21 122136
22 147205
23 175944
24 208716
25 245833
26 287685
27 334665
28 387211
29 445701
30 510642
31 582343
32 661380
33 748185
34 843286

List of values

[0, 1, 9, 48, 160, 384, 798, 1468, 2517, 4041, 6172, 9063, 12870, 17746, 23907, 31581, 40933, 52227, 65721, 81676, 100401, 122136, 147205, 175944, 208716, 245833, 287685, 334665, 387211, 445701, 510642, 582343, 661380, 748185, 843286]